Louis made his WWE television debut on the 12 February, 2014 episode of NXT, tagging with Jason Jordan in a loss to Luke Harper and Erick Rowan of the Wyatt Family.
On the 8 May, 2014 episode of NXT, Louis formed an alliance with Sylvester Lefort as two French characters representing 'the Legionnaires', and later participated unsuccessfully in a 20-man battle royal for an NXT Championship title shot. On the 26 June episode of NXT, Lefort and Louis attempted to attack Colin Cassady, who was saved by Enzo Amore. This was a continuation of Lefort's feud with Amore and Cassady back in September 2013.
At NXT TakeOver: Fatal 4-Way in September 2014, Lefort lost to Amore, and was thus supposed to lose his hair as per the match stipulation. However, Lefort ran away and Louis instead lost his hair and eyebrows via Amore and Cassady's hair removal cream. Louis initially persisted in his alliance with Lefort, hiding his lack of hair with headgear and a wig, only to lose to Amore in a singles match on the 25 September episode of NXT when his baldness was exposed. On the 16 October episode of NXT, Lefort accidentally knocked off Louis' wig, this led to Louis snapping and attacking Lefort. On the 30 October 2014 episode of NXT, Louis' character, now without entrance music, began screaming "You did this to me!" This coincided with Louis defeating Lefort in a singles match. This storyline led to Louis' character turning crazy.
On the 27 November, 2014 episode of NXT, Louis lost to Tyler Breeze, who constantly taunted Louis as being ugly. This led to a storyline where Louis could not be found, only to resurface in January 2015, stalking Breeze from afar. The storyline with Breeze was dropped when Louis returned months later in June, still bald and deranged, tagging again with Jason Jordan in a loss to the Vaudevillains. On the 12 August, 2015 episode of NXT, Louis lost to NXT Champion Finn Bálor in a non-title match.
Louis wrestled only three more matches during 2016; all three matches occurred over the month of January in a losing effort. It was reported on February 5 that Louis was released from the WWE.